class_docstr: Group of timers. Borrowed from Nvidia Megatron code
docstr: Get the mean of a group of timers.
docstr_tok: ["Get","the","mean","of","a","group","of","timers","."]
code: def get_mean(self, names, normalizer=1.0, reset=True):
      """Get the mean of a group of timers."""
      assert normalizer > 0.0
      means = {}
      for name in names:
          if name in self.timers:
              elapsed_time = (
                  self.timers[name].mean() * 1000.0 / normalizer
              )
              means[name] = elapsed_time
      return means
  
imports: import time
  from numpy import mean
  from deepspeed.utils.logging import log_dist
  from deepspeed.accelerator import get_accelerator
label_desc: Use image node_id 6 for calling the SynchronizedWallClockTimer obj's underlying member method code with example usage: obj.get_mean(names, normalizer, reset) and returns: means